/*
 * Copyright 2012 Gregor Schauer
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package at.schauer.gregor.vienna.serializer.populator;

import at.schauer.gregor.vienna.serializer.filter.AbstractFieldFilter;
import at.schauer.gregor.vienna.serializer.filter.FilterSupport;
import at.schauer.gregor.vienna.serializer.plugin.FilterRemovePlugin;

import java.util.LinkedHashMap;
import java.util.List;
import java.util.Map;

/**
 * @author Gregor Schauer
 */
public class FilterPopulator<T> extends FilterSupport<T> implements ObjectPopulator<T> {
	protected FilterRemovePlugin<T> plugin;
	protected ObjectPopulator<T> delegate;

	public FilterPopulator(List<AbstractFieldFilter<?>> filters, ObjectPopulator<T> delegate) {
		super(filters);
		this.delegate = delegate;
		plugin = new FilterRemovePlugin<T>(filters);
	}

	@Override
	@SuppressWarnings("unchecked")
	public <E extends T> E initialize(Map<String, Object> map, E obj) {
		Map<String, Object> copy = new LinkedHashMap<String, Object>(map);
		obj = plugin.doFilter(copy, (Class<E>) obj.getClass(), obj);
		return delegate.initialize(copy, obj);
	}
}
